Smelting and casting method of sulfur-containing and aluminum-containing gear steel
A technology of gear steel and converter smelting, which is applied in the field of smelting and casting, can solve the problems affecting fatigue life, cutting performance, nozzle blockage, etc., and achieve the effect of reducing aluminum loss and cost
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[0037] The method for smelting and casting sulfur-containing and aluminum-containing gear steel according to the present invention will be further explained and described below in conjunction with specific examples. However, such explanations and descriptions do not constitute improper limitations on the technical solution of the present invention.
[0038] The smelting and casting method of the sulfur-containing and aluminum-containing gear steel of Examples 1-6 adopts the following steps for smelting and casting:
[0039] (1) Electric furnace or converter smelting: control the amount of slag ≤ 5kg / ton of steel in the tapping process, and control it to be C≥0.05wt% in molten steel at the end of smelting, and add Al element when tapping to make the Al in molten steel The content reaches 0.03-0.05wt%; and the S element content is controlled to be 0.015-0.035wt% at the end point of smelting, and the temperature at the end point of smelting is 1620-1670°C.
[0040] (2) LF refinin...
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